Skin color has been studied for color rendering since 1950s. The studies contained skin color of photographs and real skin. However, virtual skin color also became important with developing display recently. In this study, animation skin color was dealt with the main theme, although it has never been treated as a subject before. Two-dimensional animation face images, the farthest from real face, were used as stimuli. In experiments, tolerantly-accepted, preferred, more preferred, and the most preferred skin color were investigated by the cascade selection method. In results, the data points of 50% subjects' consistency fitted ellipses for animation skin color. Moreover, representations of skin color appeared different lightness according facial shapes. In addition, preferred skin colors of animation facial images appeared different in properties from real skin colors, portraits and photographic images. Therefore, skin color representation changes depending on the degree of realism with illuminants and shadows.